By questioning who your family is, who you'll protect. You're crouched down behind a barrier, and there's your kid and a stranger, and you bolt with your kid and leave the stranger to die unarmed. Or you're alone, except for the stranger.
What you call a platitude, others call the most profound question in the Bible: "who is my brother"?
You’re dodging the question.
Being your brother’s keeper doesn’t make you superman.